Gear or cog wheel



(No Model.)

L. T. STANLEY. GEAR 0R GOG WHEEL.

No. 440,378. Patented Nov. 11, 1890.

WWW

UNITED TATES LUOIUS T. STANLEY, OF BROOKLYN, NEW YORK, ASSIGNOR TO HENRY B. CUTTER, OF PHILADELPHIA, PENNSYLVANIA.

GEAR OR ooc WHEEL.

SPEGIFICATION forming part of Letters Patent No. 440,378, dated November 11, 1890.

Application filed February 21, 1890. Serial No. 341,349. I (No model.)

,to and used on self-propelled street-cars or the like, and to obtain a cheap, strong, and

durable gear that may be substituted for the milled gear or cog wheels heretofore made.

My invention consists in the combination,

with a disk or the web of a wheel, of a spiral wire, rod, or bar, the bends or turns of which pass through and are secured to said web near its edge in such manner that the outside turns or bends of the spiral will form teeth or cogs adapted either to mesh with corresponding teeth on another wheel or to serve the purpose under any other conditions of the ordinary teeth or cogs which have heretofore been cut or cast on wheels.

The specific nature of the invention and the manner in which the improvement is or may be carried outwill be described by reference to the annexed drawing.

The figure is a side view of parts of two gear-wheels made in accordance with my invention.

A A are the webs of two wheels. B 0 represent spiral rods or bars passing through and secured to said webs or disks around their peripheries and forming cogs. The gear thus formed is in effect a diagonal gear, which musttherefore be used in pairs. Hence of any two intermeshing wheels the spirals are wound or coiled from right to left and from left to right, respectively. It will be observed that the outer bends or turns constitute the teeth; and from the nature of the case it will be seen that such a system of gears would be almost noiseless, strong, and elastic, and that the teeth of the respective wheels mesh as perfectly as finished milled gear. It is furthermore apparent that they have exceptional wearing qualities because of the fact that the points of contact between any two teeth are always rounded in the line of movement.

This form of wheel is produced as follows: In the first place, I wind a round rod or wire of metal spirally around a mandrel at whatever pitch may be desired. The wire or rod may be of iron, steel, or other metal and may be tempered either before or after attachment to the web. It is secured to the web by passing it through the same in one of the following ways: The spiral may be so shaped that the teeth are in the position they are to occupy in the completed gear. 011 that portion of the spiral which is to be free from the web or that constitutes the teeth a core of sand or other suitable material is formed, so that when the spiral with its at tached core is placed in a mold, the web-of any desired 1netalmay be cast directly on it. Again, the web may be prepared for the reception of the spiral by placing equidistantly a short distance from its periphery a series of holes corresponding to the desired pitch and bored through from side to side. The spiral is then threaded through these holes and fastened by brazing or soldering. If large gears are to be made in this way, the spiral may be cut up into sections, each containing two or more teeth, and then united with the web. This plan of construction is applicable to various kinds of gear and simi lar wheels. For example, a superior tractionwheel may be made in this way either with or without an elastic filling inside the spiral.

What I claim is 1. The combination, with the web of a gear or similar wheel; of a spiral rod or wire, the bends or turns of which pass through and are secured to said web near its edge, as herein set forth.

2. A gear or cog wheel composed of a castmetal web and a spiral rod or wire around its periphery, a port-ion of the bends or turns of which are embedded in the web near its edge, as set forth.

LUCIUS T. STANLEY.

Witnesses WM. MUSGRAVE, C. T. P. BRUNNERK 

